Description
Lennox 93M09 Belt Type Crankcase Heater Overview
The Lennox 93M09 is a belt-type crankcase heater engineered to protect refrigeration and air conditioning compressors from refrigerant migration during off-cycle periods. By maintaining a safe operating temperature around the compressor crankcase, this heater helps prevent liquid refrigerant from diluting compressor oil — a leading cause of premature compressor failure and costly system downtime.
Key Specifications
- SKU: 93M09
- Brand: Lennox
- Heater Type: Belt Type
- Voltage: 480 Volts
- Wattage: 90 Watts
- Compatible Compressor Diameter: 9-1/4″ – 11″
- Lead Length: 43 Inches
Features & Benefits
- Belt-style design wraps securely around the compressor shell for consistent, even heat distribution
- Wide diameter range (9-1/4″ to 11″) provides compatibility with a variety of compressor sizes
- 480-volt rating suits commercial and light industrial HVAC and refrigeration applications
- 90-watt output delivers efficient crankcase warming without excessive energy consumption
- 43-inch lead length allows flexible wiring routing in tight equipment cabinets
- Helps extend compressor life by preventing refrigerant-oil dilution during off cycles
- Genuine Lennox OEM replacement part for reliable, manufacturer-approved performance
Application
The Lennox 93M09 crankcase heater is ideal for use in commercial HVAC systems, refrigeration equipment, and any application where a 480V belt-type crankcase heater is required. It is particularly suited for systems that experience extended off-cycle periods or operate in low ambient temperature environments where refrigerant migration is a concern.
Why Choose a Crankcase Heater?
Refrigerant migration into compressor oil during shutdown can cause slugging, oil foaming, and bearing wear upon startup. Installing a properly rated crankcase heater is a low-cost preventive measure that significantly reduces the risk of compressor failure, protecting your equipment investment and minimizing unplanned service calls.
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